UE4 Arduino Color Mixer

/*
  Analog input, analog output, serial output

This sketch is intended to be a "Hello World" piece of a tutorial which translates serial communication between
Unreal 4 and Arduino

 Reads an analog input pin, maps the result to a range from 0 to 255
 and uses the result to set the pulsewidth modulation (PWM) of an output pin.
 Also prints the results to the serial monitor.

 The circuit:
 * potentiometer connected to analog pins 0, 1 and 2.
   Center pin of the potentiometer goes to the analog pin.
   side pins of the potentiometer go to +5V and ground
 * push button connected to digital pin.

 created 29 Dec. 2008, modified 9 Apr 2012, by Tom Igoe
 modified 23 February 2016, by Shaun Foster
*/

// These constants won't change.  They're used to give names
// to the pins used:
const int analogInPin1 = A0;  // Analog input pin that the potentiometer is attached to
const int analogInPin2 = A1;
const int analogInPin3 = A2;
// digital pin 2 has a pushbutton attached to it.
int pushButton = 2;

void setup() {
  Serial.begin(9600);
  // make the pushbutton's pin an input:
  pinMode(pushButton, INPUT);
}

void loop() {
  // print the results to the serial monitor:
  Serial.print(analogRead(analogInPin1));
  Serial.print(",");
  Serial.print(analogRead(analogInPin2));
  Serial.print(",");
  Serial.print(analogRead(analogInPin3));
  Serial.print(",");

  // read the input pin:
  int buttonState = digitalRead(pushButton);

  // print out the state of the button:
  Serial.print(buttonState);

  Serial.print("\n");
  delay(100);
}